Tuesday 13 September 2016

Nutrition in Animals
 MULTIPLE CHOICE QUESTIONS 1. Given below from (i) to (iv) are some food items.
 (i) Boiled and mashed potato (ii) Glucose solution (iii) A slice of bread (iv) Mustard oil Which of the above will give blue-black colour when tested with iodine?
 (a) (i) and (ii) (b) (i) and (iii) (c) (ii) and (iii) (d) (iii) and (iv)

 2. Which of the following pair of teeth differ in structure but are similar in function?
(a) canines and incisors. (b) molars and premolars. (c) incisors and molars. (d) premolars and canines.

 3. Read carefully the terms given below. Which of the following set is the correct combination of organs that do not carry out any digestive functions?
(a) Oesophagus, Large Intestine, Rectum (b) Buccal cavity, Oesophagus, Rectum (c) Buccal cavity, Oesophagus, Large Intestine (d) Small Intestine, Large Intestine, Rectum

4. The swallowed food moves downwards in the alimentary canal because of
 (a) force provided by the muscular tongue. (b) the flow of water taken with the food. (c) gravitational pull. (d) the contraction of muscles in the wall of food pipe.

 5. The acid present in the stomach
 (a) kills the harmful bacteria that may enter along with the food. (b) protects the stomach lining from harmful substances. (c) digests starch into simpler sugars. (d) makes the medium alkaline.

 6. The finger-like outgrowths of Amoeba helps to ingest food. However, the finger-like outgrowths of human intestine helps to
(a) digest the fatty food substances. (b) make the food soluble. (c) absorb the digested food. (d) absorb the undigested food.

 7. Read the following statements with reference to the villi of small intestine.
 (i) They have very thin walls. (ii) They have a network of thin and small blood vessels close to the surface. (iii) They have small pores through which food can easily pass. (iv) They are finger-like projections. Identify those statements which enable the villi to absorb digested food.
(a) (i), (ii) and (iv) (b) (ii), (iii) and (iv) (c) (iii) and (iv) (d) (i) and (iv)

 8. The false feet of Amoeba are used for
 (a) movement only. (b) capture of food only. (c) capture of food and movement. (d) exchange of gases only.

 9. The enzymes present in the saliva convert
 (a) fats into fatty acids and glycerol. (b) starch into simple sugars. (c) proteins into amino acids. (d) complex sugars into simple sugar

 10. Cud is the name given to the food of ruminants which is
 (a) swallowed and undigested. (b) swallowed and partially digested. (c) properly chewed and partially digested. (d) properly chewed and completely digested.

11. Choose the correct order of terms that describes the process of nutrition in ruminants.
 (a) swallowing → partial digestion → chewing of cud → complete digestion (b) chewing of cud → swallowing → partial digestion → complete digestion (c) chewing of cud → swallowing → mixing with digestive juices → digestion (d) swallowing → chewing and mixing → partial digestion → complete digestion



. VERY SHORT ANSWER QUESTIONS
12. Name the parts of the alimentary canal where
 (i) water gets absorbed from undigested food. (ii) digested food gets absorbed. (iii) taste of the food is perceived. (iv) bile juice is produced.

 13. Mark the following statements as True or False. If false, write the correct statements.
 (a) Tongue is attached to the roof of the mouth cavity at the back.
 (b) The large intestine is longer and wider than the small intestine of the human alimentary canal.
 (c) Mucus protects the stomach lining from damage.
 (d) All heterotrophs have a similar basic process of nutrition.

14. Choose the odd one out from each group and give reasons
. (i) liver, salivary gland, starch, gall bladder (ii) stomach, liver, pancreas, salivary gland (iii) tongue, absorption, taste, swallow (iv) oesophagus, small intestine, large intestine, rectum

 15. You were blindfolded and asked to identify the drinks provided in two different glasses. You could identify drink A as lime juice and B as bitter gourd juice. How could you do it inspite of being blindfolded?

16. Fill in the blanks with suitable words:
(a) The alimentary canal stretches from  _________ to __________.
 (b) Digestion of food starts in________ and gets completed in ___________.
 (c)_________ is the largest gland in the human body.

 17. Following statements describe the five steps in animal nutrition.
 Read each statement and give one word for each statement. Write the terms that describes each process.
(a) Transportation of absorbed food to different parts of body and their utilisation.
(b) Breaking of complex food substances into simpler and soluble substances.
 (c) Removal of undigested and unabsorbed solid residues of food from the body.
 (d) Taking food into the body.
 (e) Transport of digested and soluble food from the intestine to blood vessels.

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